Today-March 28--is the city's avg first date of 70-degree or warmer temps. Today's observed high at ORD & MDW was 36-well below the 51 norm

March 2011 is running 4.3-deg below the same period a year ago. The below normal temp regime appears likely to dominate the next 2 weeks.

These Feb-level temps are producing a 5th consecutive day of double-digit temp deficits. The chill has wiped out a 2.7-deg March surplus